1. What is friend function and friend class? Class “stu-info” stores all the details related to students like (name, reg, section , marks of 5 subjects). Class “show_details” will act like a friend of class “stu-info” and perform following operations: basic_details() and result(). These functions will work on the private data members of “stu-info”.

Auser is given read permission to a file stored on an ntfs-formatted volume. the file is then copied to a folder on the same ntfs-formatted volume where the user has been given full control permission for that folder. when the user logs on to the computer holding the file and accesses its new location via a drive letter, what is the user's effective permission to the file? a. read b. full control c. no access d. modify e. none of the above